to that for stability...? sure.

C&W can apply set SNR profiles at 9, 12 and 15db and then also apply rate caps to give higher SNR margins.

Line is likely on 12db and fluctuated a little up.

Matt

In reply to a post by uno:

Are you sure?

The wholesale product that C&W offer is 16Mb/1Mb with three levels of assured rate.

But I'm sure in the past you have said it is not capped, just a conservative statement/adveryisement of what can be achieved. Plus we have seen at least one of your customers on it at above 16Mbps. SOmething around 18Mbps IIRC?

As I said in the other post, it isn't capped but the official product is up to 16Mb. Lines may go higher but C&W can (and have) turned around when we've queried a line that wasn't getting a sync we'd expect to be told it was above 16Mb and exceeding product specification.

Matt

In reply to a post by uno:

As I said in the other post, it isn't capped but the official product is up to 16Mb. Lines may go higher but C&W can (and have) turned around when we've queried a line that wasn't getting a sync we'd expect to be told it was above 16Mb and exceeding product specification.

Matt

Ahhh .

Well I just did a third test and it was 4MB. That's 4MB, 3MB and 4MB over two days. I'm leaving my router on as instructed but I'm not sure if it makes any difference? It sounds like you all think I was misinformed?

Hi,
Can you drop me a PM with either your ticket number or ADSL line number so I can get another set of eyes on this for you. and a contact number if your not at home.

Great. I've carried out more SpeedTests over the last two days and my speed dropped to 3MB and now its 1MB down speed, not even enough to use Skype and YouTube stalls on SD.

This is the pits. Vivaciti PM'd me and I've had a couple of mails from their support department asking if I can try a different router (I don't have a spare) and saying the same as earlier, that the only problem they can see is that the line reports a disconnect when I turn off the router. But then it hasn't been a problem before so why would it now?

I've checked for malware, my anti-virus is on, I have my proxy [Privoxy] disabled, I just upgraded the firmware on the router, my router does not broadcast the SSID and the encryption is set to WPA2-PSK, besides I don't see any LED indication of piggy-backing.

I'm out of ideas. Vivaciti have three suppliers don't they? Is it worth asking them to move me to another, even as a test?

Completely remove wireless from the equation.

What is the result of speedtest when connected via cable to the router (with nothing else connected at all).

Matt

There's no wireless, the PC is always connected to the router directly via ethernet cable. Wireless is turned on for my iPhone but I rarely use it.

Switching off the modem on an ADSL connection for an appreciable time DOES trigger a drop in rate.
The following is an extract from my ISP's FAQs, but I heard it first from a former engineer colleague (on another ISP).
( A few second OFF can kick the rate up again if it has been dropped due to a short burst of interference. It should adapt up again in time, but the system is fast down slow up so a kick sometimes helps )

I entirely agree it doesn't make green or economic sense, but we seem to be stuck with it as a consequence of trying to use a 19th century telegraph system for high speed data !

JGO
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Maximum Stable Rate: The maximum stable rate (or MSR) is a line rate threshold established by BT over the first 10 days of service on the 8000 services. It is used to determine when a drop in line rate would be considered a fault.

Fault Threshold Rate: The fault threshold rate (or FTR) is 80% of the MSR. If the line rate drops below the FTR for more than 8 hours in a week period it is considered a fault and a low threshold breach fault can be raised.
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